efi_loader: capitalize EFI_LOCATE_SEARCH_TYPE values

Constants should be capitalized.
So rename the values of enum efi_locate_search_type.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/include/efi.h b/include/efi.h
index dc8edc8..2f0be9c 100644
--- a/include/efi.h
+++ b/include/efi.h
@@ -227,9 +227,9 @@
 };
 
 enum efi_locate_search_type {
-	all_handles,
-	by_register_notify,
-	by_protocol
+	ALL_HANDLES,
+	BY_REGISTER_NOTIFY,
+	BY_PROTOCOL
 };
 
 struct efi_open_protocol_info_entry {